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yaml
---
r: 82102
b: refs/heads/master
c: 5c68429
h: refs/heads/master
v: v3
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Bartlomiej Zolnierkiewicz committed Feb 1, 2008
1 parent 3370632 commit 7444521
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Showing 2 changed files with 30 additions and 38 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 53126b91274b1f2186b17c1f587c662ab74b631f
refs/heads/master: 5c68429dfe8256c6069555e5851838f8e3175f78
66 changes: 29 additions & 37 deletions trunk/drivers/ide/ide-cd.c
Original file line number Diff line number Diff line change
Expand Up @@ -2017,38 +2017,6 @@ static int ide_cd_read_tochdr(ide_drive_t *drive, void *arg)
return 0;
}

/* ATAPI cdrom drives are free to select the speed you request or any slower
rate :-( Requesting too fast a speed will _not_ produce an error. */
static int cdrom_select_speed(ide_drive_t *drive, int speed,
struct request_sense *sense)
{
struct cdrom_info *cd = drive->driver_data;
struct cdrom_device_info *cdi = &cd->devinfo;
struct request req;
cdrom_prepare_request(drive, &req);

req.sense = sense;
if (speed == 0)
speed = 0xffff; /* set to max */
else
speed *= 177; /* Nx to kbytes/s */

req.cmd[0] = GPCMD_SET_SPEED;
/* Read Drive speed in kbytes/second MSB */
req.cmd[2] = (speed >> 8) & 0xff;
/* Read Drive speed in kbytes/second LSB */
req.cmd[3] = speed & 0xff;
if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) !=
(CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) {
/* Write Drive speed in kbytes/second MSB */
req.cmd[4] = (speed >> 8) & 0xff;
/* Write Drive speed in kbytes/second LSB */
req.cmd[5] = speed & 0xff;
}

return cdrom_queue_packet_command(drive, &req);
}

static int cdrom_get_toc_entry(ide_drive_t *drive, int track,
struct atapi_toc_entry **ent)
{
Expand Down Expand Up @@ -2272,23 +2240,47 @@ static void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
cd->max_speed = (maxspeed + (176/2)) / 176;
}

static
int ide_cdrom_select_speed (struct cdrom_device_info *cdi, int speed)
/*
* ATAPI devices are free to select the speed you request or any slower
* rate. :-( Requesting too fast a speed will _not_ produce an error.
*/
static int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed)
{
ide_drive_t *drive = cdi->handle;
struct cdrom_info *cd = drive->driver_data;
struct request rq;
struct request_sense sense;
u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
int stat;

if ((stat = cdrom_select_speed(drive, speed, &sense)) < 0)
return stat;
cdrom_prepare_request(drive, &rq);

rq.sense = &sense;

if (speed == 0)
speed = 0xffff; /* set to max */
else
speed *= 177; /* Nx to kbytes/s */

rq.cmd[0] = GPCMD_SET_SPEED;
/* Read Drive speed in kbytes/second MSB/LSB */
rq.cmd[2] = (speed >> 8) & 0xff;
rq.cmd[3] = speed & 0xff;
if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) !=
(CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) {
/* Write Drive speed in kbytes/second MSB/LSB */
rq.cmd[4] = (speed >> 8) & 0xff;
rq.cmd[5] = speed & 0xff;
}

stat = cdrom_queue_packet_command(drive, &rq);

if (!ide_cdrom_get_capabilities(drive, buf)) {
ide_cdrom_update_speed(drive, buf);
cdi->speed = cd->current_speed;
}
return 0;

return 0;
}

/*
Expand Down

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